Theorem simprl

Description: Simplification of a conjunction. (Contributed by NM, 21-Mar-2007)

	Ref	Expression
Assertion	simprl	$$⊢\left(\phi \wedge \left(\psi \wedge \chi \right)\right)\to \psi$$

Proof

Step	Hyp	Ref	Expression
1		id	$$⊢\psi \to \psi$$
2	1	ad2antrl	$$⊢\left(\phi \wedge \left(\psi \wedge \chi \right)\right)\to \psi$$